论文标题
从Bogoliubov近似之外的Rydberg穿着的气体中从Bose-Einstein凝结到超固体状态的过渡
The transition from Bose-Einstein condensate to supersolid states in Rydberg-dressed gases beyond Bogoliubov approximation
论文作者
论文摘要
在本文中，我们研究了考虑到有限范围相互作用的rydberg原子的Bose-Einstein凝结。我们使用基于平均场方法的Hartree-fock-Bogoliubov近似。此外，在通过两体相互作用的有限范围特征修饰的这种近似值中，我们将获得热力学量的分析表达式，以示分别的rydberg戴的玻色气体。 BEC的准粒子光谱的假想部分表明，相对于超胚膜的形成，Roton模式的不稳定性。我们的理论预测，在三个维度上，雷德伯格（Rydberg）穿过的玻色子的二阶量子相变为supersolid阶段。
In this paper, we study Bose-Einstein condensation of Rydberg-dressed atoms considering finite range interactions. We use Hartree-Fock-Bogoliubov approximation based on Mean-Field approach. Moreover, within this approximation modified by the finite-range character of the two-body interaction we shall obtain analytical expressions for thermodynamic quantities of Rydberg-dressed Bose gas. The imaginary part of the quasiparticle spectrum of a BEC signals the instability of the roton mode with respect to the formation of supersolid state. Our theory predicts a second-order quantum phase transition from BEC to supersolid phase for Rydberg-dressed bosons in three dimensions.
